Java Enterprise in a Nutshell is an indispensable quick reference for Java programmers who are writing distributed enterprise applications. The book provides fast-paced tutorials on the following Java Enterprise APIs:

JNDI, a generic Java API for working with networked naming and directory services

Enterprise JavaBeans, a component model that separates high-level business logic from low-level housekeeping chores like security and transaction management

These APIs are the building blocks of the Java 2 Platform, Enterprise Edition (J2EE), Sun's recently announced new platform for enterprise computing. J2EE is the standard Java 2 platform with a number of extensions for enterprise development.
Java Enterprise in a Nutshell also contains O'Reilly's classic-style, quick-reference material for all of the classes in the various packages that comprise the Enterprise APIs. This material includes the core Enterprise APIs that are part of Java 1.2, as well as numerous standard extensions.
This book is a companion to both Java in a Nutshell, 3rd Edition, which covers the key non-graphical, non-enterprise APIs in Java 1.2, and Java Foundation Classes in a Nutshell, which describes the graphics- and GUI-related classes of Java 1.2.